Tohutoro APA (7th ed.)

Levitt, E. E. (1967). The psychology of anxiety (ed.). Bobbs-Merrill.

Tohutoru Kātū Chicago (17th ed.)

Levitt, Eugene E. The Psychology of Anxiety. ed. Indianapolis: Bobbs-Merrill, 1967.

Tohutoro MLA (9th ed.)

Levitt, Eugene E. The Psychology of Anxiety. ed. Bobbs-Merrill, 1967.